MVC :: Listbox1.selectedindex=0 Make The Same?
Jan 22, 2011
tis is in my cntroller class
var query3 = db.Machine_Bom.Select(c => new { c.Id, c.Machine_Name });
ViewData["Category"] = new SelectList(query3.AsEnumerable(), "Id", "Machine_Name");
in design
<%=Html.ListBox("emp", (SelectList)ViewData["Categories"], new { onchange = "addItem();", style = "width: 155px; height: 35px;" })%>
how to make the first item selected........in webforms i use listbox1.selectedindex=0 in load event but how to go with mvc
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Similar Messages:
Sep 3, 2010
I have 2 listboxes,if i select listbox1 items ,it has to be displayed in listbox2 without duplicate values.
for example if i select item "usa" in listbox1 it has to be added in listbox2.
Aagain if i select " usa" it should not add to listbox2.
one more point is i dont want to delete items from listbox1 once i select.
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Jul 9, 2010
I have 2 listboxes....
Listbox1 has
DataTextField="Category"
DataValueField="CategoryID"
(coming from Dropdownlist)
I want to move a Item (a Category) from listbox1 to listbox2...but how do I move this Category Plus the CategoryID to lisbox2 (CategoryID should not be visible but still be associated with Category in Listbox2)
So I want the newly added Categories to be visible in Listbox2 ..but their CategoryID's must be invisible...but still be associated with their Category....
and when I save these Categories from Listbox2 to the Database.....its should be the CategoryID's that should go into the Database.....not the actual Category
So to explain again in a different way
I want to Move a selected DataTextField & its DataValueField from Listbox1 to listbox2
then only the array of DataValueField must be saved to Database
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Oct 15, 2010
I have two ListBoxes.I want to movie items from ListBox1 to Listbox2 using jquery.
I want to save ListBox2 items in Xml file.
But i am unable to get ListBox2 items after moving from ListBox2.
I searched for this problem.Solutions is Use HiddenField for getting server side.
I am new to Dot net.So Explain with one simple example.
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Dec 20, 2010
i want to know how to copy multiple items from Listbox1 to Listbox2.i tried in single item copy it's working but i want to know multiple items to copy.
here is my code..
.aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.style1
{
width: 65%;
height: 261px;
}
.style2
{
width: 64px;
}
.style3
{
width: 46px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td rowspan="4">
<asp:ListBox ID="lstLeft" runat="server" AppendDataBoundItems="True"
Height="285px" SelectionMode="Multiple" Width="213px">
<asp:ListItem>10th</asp:ListItem>
<asp:ListItem>Diploma</asp:ListItem>
<asp:ListItem>12th</asp:ListItem>
<asp:ListItem>UG</asp:ListItem>
<asp:ListItem>PG</asp:ListItem>
</asp:ListBox>
</td>
<td>
</td>
<td rowspan="4">
<asp:ListBox ID="lstRight" runat="server" Height="286px"
SelectionMode="Multiple" Width="213px"></asp:ListBox>
</td>
</tr>
<tr>
<td>
<asp:Button ID="butAdd" runat="server" onclick="butAdd_Click" Text="-->"
Width="61px" />
</td>
</tr>
<tr>
<td>
<asp:Button ID="butRemove" runat="server" onclick="butRemove_Click"
Text="<--" Width="63px" />
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
<html
aspx.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
ListItem Item = new ListItem();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void butAdd_Click(object sender, EventArgs e)
{
if (lstLeft.SelectedIndex > -1)
{
if (lstRight.Items.FindByValue(lstLeft.SelectedItem.Text) == null)
{
Item.Text = lstLeft.SelectedItem.Value;
Item.Value = lstLeft.SelectedItem.Text;
lstRight.Items.Add(Item);
lstLeft.Items.Remove(lstLeft.SelectedItem);
}
}
}
protected void butRemove_Click(object sender, EventArgs e)
{
if (lstRight.SelectedIndex > -1)
{
Item.Text = lstRight.SelectedItem.Value;
Item.Value = lstRight.SelectedItem.Text;
lstLeft.Items.Add(Item);
lstRight.Items.Remove(lstRight.SelectedItem);
}
}
}
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Jun 15, 2010
Overview
I have 3 update panels on a page, each of them have UpdateMode="Conditional".
UpdatePanel1 contains listbox1 (AutoPostBack set to true) which is populated on pageinit from the DB.
UpdatePanel2 contains listbox2 (AutoPostBack set to true), this panel has AsyncPostBackTrigger set to the SelectedIndexChanged event for listbox1 in UpdatePanel1.
UpdatePanel3 contains textboxes that will hold the details once an item has been selected from listbox1 and listbox2, this panel has an AsyncPostBackTrigger set to the SelectedIndexChanged event for listbox2 in UpdatePanel2.
In the codebehind, the SelectedIndexChanged event for listbox1 populates listbox2 and the SelectedIndexChanged event for listbox2 populates the textboxes in UpdatePanel3.
The problem
When the page loads listbox1 is correctly populated, I select a value from listbox1 and listbox2 is populated, great, no problem so far. When I then select a value from listbox2 the SelectedIndexChanged event for listbox1 is firing, I assume that as this populates listbox2 again it is clearing the selected value for listbox2 as the SelectedIndexChanged event for listbox2 is not firing.
How do I stop the SelectedIndexChanged event for listbox1 in UpdatePanel1 from firing when I select a value from listbox2 in UpdatePanel2 ?
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Dec 9, 2010
Is this possible? I programatically change the selected index when a certain event is fired using this code:DropDownList.SelectedIndex = DropDownList.SelectedIndex + 1ow I want to update a corresponding textbox with the text that is in the new SelectedIndex of the DropDownList via postback.I know how I can do this in javascript
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Jul 2, 2010
I have 3 security question drop down menus. I have javascript on the ASPX page that removes questions/repopulates them when you select a questions (so you cannot reselect the questions in the other 2 boxes). This works wonderfully when a user is editing their profile with already selected questions. However, when a user first selects the questions where all three boxes are listing "select a question" at selectedIndex 0, the onChange doesn't fire. The function won't even go. I think this has a big something to do with the on change from selected index of 0. I have debugged this thing and it doesn't even enter the function. I even set the onchange action to flash an alert. It just seems something is going wrong when i try to action onchange from selected index of 0.
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Jul 19, 2010
I have a dropdownlist, who's items I bind from the codebehind file of an asp.net web page. After databinding, I want to set the selected index as the last item in the list, thus:
[Code]....
However, this does not work. When the page is done loading, the selected index is still zero.
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Feb 21, 2010
I've got a simple upload form. Here's my code:
[code]....
You are supposed to be able to select which gallery you want to upload a logo image for, and then select your image file and click the upload button. Here's my upload sub:
[code]....
My problem is that the data bound listbox gallerySelect's selectedIndex is always -1. I know its because it's data bound but I don't know what I have to do to be able to get the value.
[code]....
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Apr 2, 2011
This is my first web page ever and I can't seem to find the correct way to get the selected index from a dropdown list. I don't need the selected index until the user presses the submit button. I've been testing everything I've found on the subject, but nothing is working.
I don't want the drop-down box to reset when the selection is made, which is what happens if I use postback=true or any selected index changed events. And, I still get an index of 0.
When I test, the selected index is always zero.
This runs on page load:
[Code]....
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Mar 19, 2011
I have one ListBox which has three Items in it. And also has one GridView and One Button.
I want to move the selected items in the listbox to the GridView when the Button is clicked.
Now the problem is, if I selects the third item in the listbox and clicks the button, It always moves the first item in the ListBox to the GridView.
How to solve this?
<asp:ListBox ID="lbDrawing" runat="server" AutoPostBack="false" Height="260px" TabIndex="12" Width="150px"></asp:ListBox>
In the Button click event, I select the item by the following C# code,
string itemsname = lbDrawing.Items[lbDrawing.SelectedIndex].Text;
I fill the ListBox based the DropDownList SelectedIndex Changed Event. So I can not bind the ListBox in the Page is not PostBack Block.
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Mar 17, 2011
I have a DropDownList in a DetailsView, which binds a user's 'AllocatedUser' to a user in the Users table. Occasionally, we'll have some mishaps in the database where the user allocated isn't in the users table, which the DropDownList is filled with. In this case the site crashes and we get a 'SelectedValue does not exist in the list of items error'.What I want to do is catch any binding errors like that, and just set the DropDownList index to 0. I've tried something like this:
OnDataBinding='DoesExist("AllocatedUser",<%#Bind("AllocatedUser")%>)'
but it doesn't like the syntax of that.
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Nov 16, 2010
I have a situation where I have a page in ASP.NET. In this page I have a RadioButtonList, which contains 5 solutions to a question. The RadioButtonList is feeded by an object, which has these solutions.I have a timer, which runs every second, to update loads of graphical controls. Everything works, BESIDES the RadioButtonList selection.This is what happends:
When I select an item in the RadioButtonList and the timer tick, the selectedIndex of the RadioButtonLIst value is 0. This means it selects the FIRST item in the list. However, IF I click an item, which has a "Yes" value in it (the value field can either have "No" or "Yes", it will stay at this item.First of all, I have NO idea why the timer re-select my RadioButtonList selection, as any other Page_Load event does nothing. And even if that makes sense, I have no idea why it just re-selects SOME of the answers..I have the following HTML code:
<asp:Timer ID="AssignmentTimer" runat="server" Interval="1000">
</asp:Timer>
<asp:UpdatePanel ID="FightUpdatePnl" runat="server" UpdateMode="Always" ChildrenAsTriggers="True">[code]....
When the timer ticks, the RadioButtonList re-select item 0. This is however not consistent, and sometimes it doesn't re-select.
I'd rather it didn't re-select at all! :)
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Jul 9, 2010
I have some HtmlSelect (a'la asp.net's DropDownList) with ID's like Select1, Select2, ..., Select13. I create the static List of items:
for (int i = 0; i < tab.Length; i++)
_listItems[i] = (new ListItem { Text = tab[0, i], Value = tab[1, i], Selected=false });
then I assign that list for each HtmlSelect control & assign a new SelectedIndex property:
var HtmlSelectControl = ((HtmlSelect)this.FindControl(String.Format("Select{0}", controlNumber)));
HtmlSelectControl.Items.AddRange(_listItems);
HtmlSelectControl.SelectedIndex = controlNumber - 1;
The problem is, when I set the SelectedIndex property of the Select2 control (e.g. =1), the Select1 control has the same SelectedIndex property (which has that index =0). Why ?
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Apr 24, 2010
how do I set the SelectedIndex of a DropDownList based on the SelectedValue
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Jan 27, 2011
how to change my accordion pane's selectedindex and have come up empty handed thus far.
I've tried both with javascript and C#
Javacsript example:
var a = $('<%=AccordionMain.ClientID%>');
a.set_SelectedIndex(index);
C# example:
AccordionMain.SelectedIndex = 2;
Both of the above code excerpts run, but neither visibly change the selected pane. What am I doing wrong?
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Jun 23, 2010
I have a Drop Down List that has some items in it, I have a switch set up that will clear and repopulate the drop down list from a sql server db depending on which item is chosen. When the list is repopulated from a database table I want to use an if statement to do something based on which item is chosen. I've tried to use an if statement but no matter what I try, the code checks the if statement for the original items in the drop down list, not the items that repopulated the drop down list.
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Apr 1, 2011
Here is my code:
Protected Sub BookingsGV_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles BookingsGV.SelectedIndexChanged
BookingID = BookingsGV.SelectedValue
Dim query = From a In db.Approvers Where a.ApprovalStatus = False And a.BookingID = BookingID
Select a.ApproverEmail()
ApproverList.DataSource = query
ApproverList.DataBind()......
When I click on a row for the first time it is selected but nothing fires and my details panel is not displayed. When I click for the second time I get the expected results.
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Feb 17, 2011
I want to set the selectedindex of ddlExceptionNumbers to a Session variable value. I set my debugger just passed the last line of this code segment, and it doesn't change the selectedindex, it's 0. Session["CurrentExceptionID"] has a non-zero positive value.
[Code]....
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Jul 20, 2010
I've to implement dynamically generated 'Tests'. It seems the best asp control to handle each's test option is the RadioButtomList control, thus I am writting in c# code to load programatically a table, render on rows the Tests' questions, and the options via radiobtuttonlist as the code bellow shows.
THE PROBLEM's since I did not ID each radiobuttomlist, once the test's end user submit his choices, I do not know how to get the selected item for each control so I can compute the results.
[Code].....
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Sep 13, 2010
i am unable to change the selectedindex property to 0 it is coming as -1 only and the code wat i am using is
if (lstintellisense.SelectedIndex.ToString() == "-1")
{
lstintellisense.SelectedIndex = 0;
}
after making 0 also its remaining as -1 only and i am getting exception as InvalidArgument=Value of '0' is not valid for 'SelectedIndex'. Parameter name: SelectedIndex
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Aug 18, 2010
I display a GridView where ther user can choose a Datarow with the select action. I catch the selection with the "SelectedIndexChanged" event of the GridView.
[Code]....
My problem is I can't use the SelectedIndex to identify the Access Row because when the user uses paging/sorting the SelectedIndex is not the AccessRow. Somehow I have to identify the selected row the user chooses with the PrimaryKey in Access ("Number").
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Mar 3, 2011
by doing this can i call selectedindex change of dropdown on pageload:
dropdownlist_selectedindex(nothing,nothing)
if yes, then what is the situations wherein i will require to do such a thing.
if not, then how do i do it?
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Mar 6, 2010
I searched the forum for several days now , but can't find an answer to my problem.
I have 4 Ajax Cascading DropDown named,
ddlCatalogueName > ddlMainGroup > ddlSubGroup > ddlPageNumbers ,
I am passing the values obtained from ddlSubGroup and ddlPageNumbers to a datasource as parameter (Actually to a pageddata ) , on which i create a DataList.
The page is working fine actually but the problem is like the following,</p>
Considering that all dropdown are selected as following :
When i change ddlSubGroup to another one , ddlPageNumbers is populated depending on the number of items divided by 20 ( The datalist is paged by 20 items per time)
then i change the ddlSubGroup(RUBBER PARTS in this example for example to BodyParts , so the dropdown values becomes like :
[code]....
At this point Body PARTS also has page numbers like 1,2,3,4 etc but, it still remains as 2 , however i need the page number to reset back to 1.
Is there any way to do this , and where should i place the code exactly ( which event ) ?
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